State police and the country's security agency are looking into the co-pilot, who attempted to take control of a Flydubai plane travelling to Israel.

Polls suggest the election will be a closely run contest between the left-wing incumbent and his right-wing rival.

Ghana is a predominantly Christian country where preaching on public transport is widespread.

Michael Kotlikoff described the allegations of a woman who says she was drugged and gang raped as "deeply disturbing".